Letterman brought up Monica Lewinsky, saying he felt bad for the role he played in making her the butt of jokes after her affair with President Bill Clinton in the late 1990s. Lewinsky recently resurfaced in an interview with Vanity Fair.

"I like Monica, and I felt that she's never had the chance to move on," Walters said, noting that both Bill and Hillary Clinton have been able to continue their lives.

"Monica is still stuck in the humor of it," she said.

Noting that Walters is retiring from her show "The View," Letterman suggested that Lewinsky could work as a co-host there.

Walters thought for a moment, then slowly responded, "I won't tell you what we have done, but it would have been possible. I don't think that's what she wanted."

But, she added, "I think it would be great if she were on 'The View.' I wouldn't expect it tomorrow."

Walters also talked about embattled Los Angeles Clippers owner Donald Sterling, who backed out of an interview with her to discuss his recorded racist rant.

Walters said she isn't a doctor, so she doesn't know if Sterling is in the early stages of dementia, as his estranged wife, Shelly, told her. But during off-camera talks about doing an interview, Walters said, "I felt talking to him that he was confused."

As Barbara Walters prepares to retire from journalism on Friday, she is making the talk show rounds to discuss her career. She might have hinted at someone else's career Wednesday night on "Late Show with David Letterman."